Crate openapi_type

This crate gives static type information for primitives and commonly used types from the standard library and a few other commonly used libraries like chrono, time and uuid. Also, it provides a derive macro for structs and enums to gain access to their static type information at runtime.

The core of this crate is the OpenapiType trait. It has one static function, schema, which returns an OpenapiSchema. This assembles the static type information in a way that is convenient to use for a generated OpenAPI specification, but can also be utilized in other use cases as well.

Custom Types

To gain access to the static type information of your custom types at runtime, the easiest way is to use the derive macro:

#[derive(OpenapiType)]
struct FooBar {
	foo: String,
	bar: u64
}

OpenAPI specification

Using above type, running FooBar::schema().into_schema() yields

type: object
title: FooBar
properties:
  foo:
    type: string
  bar:
    type: integer
    format: int64
    minimum: 0
required:
  - foo
  - bar

Note, however, that this is not sufficient for more complex types. If one of your structs fields is a type that has a name (that is, Type::schema().name is not None), above schema will contain a reference to that schema. Therefore, always remember to put the dependencies into the specification alongside the type you are interested in.

Re-exports

pub use indexmap;

pub use openapiv3 as openapi;

Structs

OpenapiSchema

This struct is used to generate the OpenAPI specification for a particular type. It is already made available for all primitives and some other types from the rust standard library, and you can also make your own types provide one through the OpenapiType trait and derive macro.

Traits

OpenapiType

This trait needs to be implemented by every type that is being used in the OpenAPI Spec. It gives access to the OpenapiSchema of this type. It is provided for primitive types, String and the like. For use on your own types, there is a derive macro:

Derive Macros

OpenapiType

The derive macro for OpenapiType.